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Iron 65 mg

4.7
★ ★ ★ ★ ★
(220 ratings)
Iron 65 mg
Product Image
Score78
A very inexpensive high-dose iron tablet for supervised correction, with significant tolerability and overuse concerns.
How scoring works
Tablet
Quantity:240 Tablet(s) • (240 servings)
Goals:
Energy

Score 78

A very inexpensive high-dose iron tablet for supervised correction, with significant tolerability and overuse concerns.
How scoring works

Also available as

1 option
120 servings Iron 65 mg • 120 Tablet(s) • 120 servings $5.49 ($0.04 per serving)
$9.98($0.04 per serving)
Vitacost
$ 9.99
iHerb
$ 9.99
Amazon
$ 286.99
Pure Formulas
$ 9.98
Report prices

Analysis

Ferrous sulfate delivers 65 mg of iron in a single tablet. The amount may suit substantial deficiency correction, but it is much higher than a casual maintenance supplement.

Ferrous sulfate is more likely than chelated forms to cause constipation, nausea, or stomach irritation. The product includes no vitamin C or other nutrients that would broaden its role beyond high-dose iron delivery.

A 240-tablet bottle provides exceptional supply and low serving cost. The large quantity also increases the importance of safe storage and periodic review so use does not continue after the need has resolved.

Who is it for
  • Adults with a clinician-confirmed high iron need
  • People using ferrous sulfate under monitoring
Best for
  • High-dose deficiency correction
  • Very low-cost iron supply

Pros

  • 65 mg clearly disclosed iron
  • Simple single-active formula
  • Very low serving cost
  • Large tablet supply

Cons

  • Dose is aggressive
  • Sulfate form may be hard on digestion
  • No vitamin C or cofactors
  • Large supply may outlast the need

Warnings

  • Use 65 mg iron only with a demonstrated need because excess can accumulate, especially in iron-overload disorders.
  • Ferrous sulfate commonly causes constipation, nausea, stomach irritation, or dark stools.
  • Keep the 240-tablet bottle away from children because accidental iron ingestion is dangerous.
  • Separate iron from levothyroxine and tetracycline or quinolone antibiotics according to professional guidance.

Nutrient quality

70 High impact

The iron amount is potent and directly supports deficiency-oriented use. A harsh sulfate form and aggressive dose create substantial tolerance and overdosing concerns.

Ingredient transparency

85 Highest impact

The active form and amount are clearly disclosed without a proprietary blend. Missing full use guidance and non-active tablet ingredients leave practical gaps for a high-dose product.

Customer satisfaction

68 High impact

The supplied average is strong and supported by moderate response volume. No comment-level evidence is available to assess repeated complaints or alignment with the intended use.

Value for money

88 Highest impact

Very low serving cost and a clearly measured active support strong economic value. Harsh form quality and a dose unsuitable for routine use reduce practical value.

Report analysis

Goals

Energy
Energy
Impact
High effect
A- Goal FitD+ Strength of SupportD+ CoverageA+ Formula Quality
Iron · 65 mg

High-dose ferrous sulfate can improve oxygen transport and fatigue when a significant iron deficiency is confirmed. The basic salt is more likely to cause nausea, constipation, or abdominal discomfort than gentler chelates.

The amount is too high for casual routine use and is better suited to clinician-directed deficiency treatment. A single-active design is clear, but it does not address any other energy pathway.

Study evidence
Iron Supportive 74 studies
Hair Health
Hair Health
Impact
Moderate effect
B- Goal FitC- Strength of SupportD- CoverageB Formula Quality
Iron · 65 mg

Iron may help hair shedding caused by iron deficiency, but a 65 mg dose is unsuitable as routine hair support without a documented need. The amount exceeds the adult upper intake level and increases digestive and overload concerns.

Ferrous sulfate is clearly identified and widely used, though it can be poorly tolerated. Use should follow iron testing or clinical direction, especially for people with iron-storage disorders.

Study evidence
Iron Disputed 25 studies
Fitness
Fitness
Impact
Moderate effect
C Goal FitC Strength of SupportD- CoverageB Formula Quality

Iron may support oxygen transport and exercise capacity when a confirmed deficiency is present. The 65 mg amount is clearly disclosed in a simple one-tablet formula.

The dose is high for routine unsupervised use, and ferrous sulfate is more likely to cause nausea, constipation, or stomach discomfort than gentler chelated forms. People without a demonstrated iron need should not treat this as a general fitness enhancer.

Study evidence
Iron Supportive 81 studies
Immunity
Immunity
Impact
Moderate effect
B+ Goal FitF Strength of SupportF CoverageB+ Formula Quality

Iron is a foundational nutrient for oxygen transport and energy metabolism, but this high-potency tablet is designed for a specific need rather than casual wellness use. Ferrous sulfate is effective but often less gentle than chelated forms.

The amount is well above routine daily requirements and should generally be used only when iron deficiency or increased need has been established. Excess iron can cause digestive symptoms and may be harmful when iron stores are already adequate.

Study evidence
Iron Supportive 23 studies
Mental Focus
Mental Focus
Impact
Moderate effect
D- Goal FitD+ Strength of SupportD- CoverageB Formula Quality

Iron may improve brain fog and concentration when iron deficiency is present, but it is not a general focus enhancer. The high-potency serving is better suited to professionally guided deficiency support than routine cognitive use.

Ferrous sulfate is clearly disclosed but can cause more constipation, nausea, or stomach irritation than gentler forms. People without a confirmed need may gain no focus benefit and can be exposed to unnecessary iron.

Study evidence
Iron Adverse 33 studies

Ingredients

IngredientAmount per serving
Iron (Ferrous Sulfate)
 65 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Iron (Ferrous Sulfate) · 65 mg OverallScore68
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyA+ Value
Ferrous sulfate provides high-potency iron but is more likely to cause digestive discomfort than gentler forms. The 65 mg dose may suit clinician-directed deficiency support rather than routine unsupervised use. One tablet and a very low serving cost make it convenient and economical.
View ingredientView products
Loading alternative details
85 Performance

Iron Complex

Advanced Nutrition by Zahler
Ferrochel iron is paired with vitamin C, methylcobalamin, folic acid, and histidine, giving broader disclosed support for energy and hair goals. Its iron amount is lower than the original’s 65 mg. The added nutrients make it less minimal than a single-ingredient iron product.
87 Performance

Vegan True Iron Support

Source Naturals
Ferrochel bisglycinate iron is combined with vitamin C, folic acid, and vitamin B12, with strong iron and energy alignment. Its iron amount is lower than the original’s 65 mg. Cyanocobalamin and folic acid are clearly listed, although other forms may be preferred by some users.
86 Performance

Chelated Iron 18 mg

Bluebonnet
The concise formula uses a clearly identified ferrous bisglycinate chelate and avoids unrelated active ingredients. Its iron amount is lower than the original’s 65 mg. The simpler amount may suit users who do not need a higher-dose or multi-ingredient formula.
77 Budget

Iron 65 mg

Nature Made
The lower serving cost provides a clearly identified ferrous sulfate form. Its iron amount stays close to the original’s 65 mg. The single-active formula keeps the formula similarly focused on iron.
85 Budget

Iron 25 mg

Source Naturals
The serving cost is essentially equal, while the alternative provides iron as an explicitly named amino acid chelate. Its iron amount is lower than the original’s 65 mg. The single-active formula keeps the formula similarly focused on iron.
85 Budget

Iron Ferrochel Ferrous Bisglycinate Chelate 36 mg

California Gold Nutrition
The supplied serving cost is not lower, so this is a fit-focused fallback that provides iron as a clearly identified Ferrochel ferrous bisglycinate chelate. Its iron amount is lower than the original’s 65 mg. The single-active formula keeps the formula similarly focused on iron.
86 Value

High Absorption Iron with Ferrochel 27 mg

Doctor's Best
The supplied serving cost is not lower, so this is a fit-focused fallback that provides a focused Ferrochel iron formula with favorable iron and hair-goal alignment. Its iron amount is lower than the original’s 65 mg. The single-active formula keeps the formula similarly focused on iron.
80 Value

Iron 27 mg

21st Century
The serving cost is essentially equal, while the alternative provides ferrous gluconate iron with a disclosed calcium amount. Its iron amount is lower than the original’s 65 mg. The added calcium makes it less minimal than a single-ingredient iron option.
78 Value

Prenatal Multivitamin/Multimineral with Folate

Spring Valley
The serving cost is essentially equal, while the alternative provides iron alongside folate, vitamin C, vitamin D3, zinc, and other prenatal nutrients. Its iron amount is lower than the original’s 65 mg. The iron form is not supplied, and the prenatal focus may be unnecessary for someone seeking iron alone.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Large-dose intravenous ferric carboxymaltose injection for iron deficiency anemia in heavy uterine bleeding: a randomized, controlled trial.
    Van Wyck DB; Mangione A; Morrison J; Hadley PE; Jehle JA; Goodnough LT · Transfusion · 2010
    Randomized trial477 participantsEnergy forIron
  2. The Effect of Parenteral or Oral Iron Supplementation on Fatigue, Sleep, Quality of Life and Restless Legs Syndrome in Iron-Deficient Blood Donors: A Secondary Analysis of the IronWoMan RCT.
    Macher S; Herster C; Holter M; Moritz M; Matzhold EM; Stojakovic T; Pieber TR; Schlenke P; Drexler C; Amrein K · Nutrients · 2021
    Randomized trial176 participantsEnergy forIron
  3. Ferric carboxymaltose vs. oral iron in the treatment of pregnant women with iron deficiency anemia: an international, open-label, randomized controlled trial (FER-ASAP).
    Breymann C; Milman N; Mezzacasa A; Bernard R; Dudenhausen J; FER-ASAP investigators · Journal of perinatal medicine · 2018
    Randomized trial252 participantsEnergy forIron
  4. Effect of iron therapy on fatigue symptoms in non-anaemic iron deficient women of reproductive age- A Randomized Controlled Trial.
    Sultana N; Bajwa FA; Sikandar MZ; Haider MM; Majeed T · JPMA. The Journal of the Pakistan Medical Association · 2026
    Randomized trial164 participantsEnergy forIron
  5. Intravenous iron isomaltoside treatment of women suffering from severe fatigue after postpartum hemorrhage.
    Holm C; Thomsen LL; Langhoff-Roos J · The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2019
    Randomized trial85 participantsEnergy forIron
  6. Ferric carboxymaltose in patients with heart failure and iron deficiency.
    Anker SD; Comin Colet J; Filippatos G; Willenheimer R; Dickstein K; Drexler H; Lüscher TF; Bart B; Banasiak W; Niegowska J; Kirwan BA; Mori C; von Eisenhart Rothe B; Pocock SJ; Poole-Wilson PA; Ponikowski P; FAIR-HF Trial Investigators · The New England journal of medicine · 2010
    Randomized trial459 participantsFitness forIron
  7. Marginal iron deficiency without anemia impairs aerobic adaptation among previously untrained women.
    Brownlie T; Utermohlen V; Hinton PS; Giordano C; Haas JD · The American journal of clinical nutrition · 2002
    Randomized trial41 participantsFitness forIron
  8. Ferric Carboxymaltose Versus Ferrous Fumarate in Anemic Children with Inflammatory Bowel Disease: The POPEYE Randomized Controlled Clinical Trial.
    Bevers N; Van de Vijver E; Aliu A; Rezazadeh Ardabili A; Rosias P; Stapelbroek J; Bertrams Maartens IA; van de Feen C; Escher H; Oudshoorn A; Teklenburg S; Vande Velde S; Winkens B; Raijmakers M; Vreugdenhil A; Pierik MJ; van Rheenen PF · The Journal of pediatrics · 2023
    Randomized trial64 participantsFitness forIron
  9. Daily iron supplementation for improving anaemia, iron status and health in menstruating women.
    Low MS; Speedy J; Styles CE; De-Regil LM; Pasricha SR · The Cochrane database of systematic reviews · 2016
    Meta-analysis8,506 participants67 studies pooledFitness forIron
  10. Altered metabolic response of iron-depleted nonanemic women during a 15-km time trial.
    Zhu YI; Haas JD · Journal of applied physiology (Bethesda, Md. : 1985) · 1998
    Randomized trial37 participantsFitness forIron
  11. The Association Between Alopecia Areata and Iron Deficiency Anemia: A Large-Scale Population-Based Case-Control Study.
    Davidovici B; Drutin Y; Ben-Tov A; Mimouni D; Wohl Y · Journal of personalized medicine · 2026
    Case-control study100,203 participantsHair Health forIron
  12. Iron Deficiency and Nonscarring Alopecia in Women: Systematic Review and Meta-Analysis.
    Treister-Goltzman Y; Yarza S; Peleg R · Skin appendage disorders · 2022
    Meta-analysis10,029 participants36 studies pooledHair Health forIron
  13. Comparative Analysis of Postoperative Hair Loss and Micronutrient Deficiencies After One-Anastomosis Gastric Bypass Versus Sleeve Gastrectomy.
    Chinisaz F; Maleki T; Najjari K; Miratashi Yazdi SA · Obesity surgery · 2026
    Cohort study261 participantsHair Health forIron
  14. Assessment of Serum Ferritin Levels in Female Patients With Telogen Effluvium.
    Thamotharan N; Harikumar MV; Sundaram M; Swaminathan A; Rangarajan S · Cureus · 2026
    Cross-sectional study100 participantsHair Health forIron
  15. Diagnosis and treatment of female alopecia: Focusing on the iron deficiency-related alopecia.
    Lin CS; Chan LY; Wang JH; Chang CH · Tzu chi medical journal · 2023
    Cohort study155 participantsHair Health forIron
  16. The immune response in iron-deficient children: Impaired cellular defense mechanisms with altered humoral components.
    Macdougall LG; Anderson R; McNab GM; Katz J · The Journal of pediatrics · 1975
    Single-arm trial27 participantsImmunity forIron
  17. The role of iron homeostasis in remodeling immune function and regulating inflammatory disease.
    Mu Q; Chen L; Gao X; Shen S; Sheng W; Min J; Wang F · Science bulletin · 2023
    Narrative reviewImmunity forIron
  18. Hepcidin--a peptide hormone at the interface of innate immunity and iron metabolism.
    Ganz T · Current topics in microbiology and immunology · 2006
    Narrative reviewImmunity forIron
  19. Adaptive immunity and vaccination - iron in the spotlight.
    Preston AE; Drakesmith H; Frost JN · Immunotherapy advances · 2025
    Narrative reviewImmunity forIron
  20. Buried Treasure: Evolutionary Perspectives on Microbial Iron Piracy.
    Barber MF; Elde NC · Trends in genetics : TIG · 2016
    Narrative reviewImmunity forIron
  21. The Effect of Iron-Fortified Lentils on Blood and Cognitive Status among Adolescent Girls in Bangladesh.
    Barnett AL; Wenger MJ; Yunus FM; Jalal C; DellaValle DM · Nutrients · 2023
    Randomized trial359 participantsMental Focus forIron
  22. Cognitive Performance in Indian School-Going Adolescents Is Positively Affected by Consumption of Iron-Biofortified Pearl Millet: A 6-Month Randomized Controlled Efficacy Trial.
    Scott SP; Murray-Kolb LE; Wenger MJ; Udipi SA; Ghugre PS; Boy E; Haas JD · The Journal of nutrition · 2019
    Randomized trial140 participantsMental Focus forIron
  23. Effects of iron supplementation twice a week on attention score and haematologic measures in female high school students.
    Rezaeian A; Ghayour-Mobarhan M; Mazloum SR; Yavari M; Jafari SA · Singapore medical journal · 2015
    Randomized trial200 participantsMental Focus forIron
  24. Randomised study of cognitive effects of iron supplementation in non-anaemic iron-deficient adolescent girls.
    Bruner AB; Joffe A; Duggan AK; Casella JF; Brandt J · Lancet (London, England) · 1996
    Randomized trial81 participantsMental Focus forIron
  25. Effect of iron supplementation on cognition in Greek preschoolers.
    Metallinos-Katsaras E; Valassi-Adam E; Dewey KG; Lönnerdal B; Stamoulakatou A; Pollitt E · European journal of clinical nutrition · 2005
    Randomized trial49 participantsMental Focus forIron